Question

I have 6 questions please help ):

1.) A square with an area of 121 cm^2 is rotated to form a cylinder. What is the height of the cylinder?

2.) A square with an area of 81 ft^2 is rotated to form a cylinder. What is the radius of the cylinder?

3.)A square with area of 16 cm^2 is rotated to form cylinder. What is the volume of the cylinder?

4.)You have a cone with a radius of 6 ft and a height of 12 ft. Find the area of the triangle formed by a perpendicular cross-section through the cone’s center.

5.) You have a cone with a radius of 4 ft and a height of 14 ft. What is the height of the triangle formed by a perpendicular cross-section through the cone’s center?

Answer 1

According to question

Let the Side of square be x

Thus    Area of Square = x^2
So
     x^2 = 121 Cm^2
     x = 11 Cm

Thus Height of Cylinder = x = 11 Cm

So height of cylinder is 11 Cm